:root{
      --bg:#f6f1ea;
      --bg2:#fcfaf7;
      --card:#fffaf4;
      --line:#eadfce;
      --text:#243243;
      --muted:#5f6b78;
      --brand:#1f7a8c;
      --brand2:#e86f51;
      --brand3:#7c5cff;
      --shadow:0 12px 30px rgba(33, 44, 66, .08);
      --shadow2:0 18px 42px rgba(31, 122, 140, .12);
      --radius:22px;
      --max:1180px;
    }
    *{box-sizing:border-box}
    html{scroll-behavior:smooth}
    body{
      margin:0;
      font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;
      color:var(--text);
      background:
        radial-gradient(circle at 12% 0%, rgba(31,122,140,.10), transparent 26%),
        radial-gradient(circle at 88% 10%, rgba(232,111,81,.10), transparent 24%),
        linear-gradient(180deg, #f6f1ea 0%, #fbf7f2 34%, #f6f1ea 100%);
    }
    a{color:inherit;text-decoration:none}
    img{display:block;max-width:100%}
    .container{max-width:var(--max);margin:0 auto;padding:0 20px}
    .site-header{
      position:sticky;top:0;z-index:60;
      backdrop-filter:saturate(160%) blur(14px);
      background:rgba(246,241,234,.84);
      border-bottom:1px solid rgba(234,223,206,.9);
    }
    .nav{
      display:flex;align-items:center;justify-content:space-between;gap:16px;
      min-height:76px;
    }
    .brand{display:flex;align-items:center;gap:12px;min-width:0}
    .brand .ai-page-logo{width:42px;height:42px;border-radius:12px;object-fit:cover;background:#fff;border:1px solid var(--line);box-shadow:var(--shadow)}
    .brand-text{min-width:0}
    .brand-text strong{display:block;font-size:18px;line-height:1.1}
    .brand-text span{display:block;font-size:12px;color:var(--muted);margin-top:3px}
    .nav-toggle{
      display:none;border:1px solid var(--line);background:#fff;border-radius:14px;padding:10px 12px;color:var(--text)
    }
    .nav-links{display:flex;align-items:center;gap:18px;flex-wrap:wrap;justify-content:flex-end}
    .nav-links a{font-size:14px;color:#3b4b58;padding:8px 0;position:relative;white-space:nowrap}
    .nav-links a::after{
      content:"";position:absolute;left:0;bottom:0;width:100%;height:2px;background:linear-gradient(90deg,var(--brand),var(--brand3));transform:scaleX(0);transform-origin:left;transition:transform .25s ease
    }
    .nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1)}
    .nav-cta{display:flex;align-items:center;gap:10px}
    .btn{
      display:inline-flex;align-items:center;justify-content:center;gap:8px;
      border-radius:999px;padding:12px 18px;border:1px solid transparent;
      font-weight:700;font-size:14px;transition:.25s ease;cursor:pointer;
      box-shadow:0 8px 18px rgba(31,122,140,.08);
    }
    .btn-primary{background:linear-gradient(135deg,var(--brand),#23a5a8);color:#fff}
    .btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow2)}
    .btn-ghost{background:#fff;color:var(--text);border-color:var(--line)}
    .btn-ghost:hover{border-color:#c9baa3;transform:translateY(-1px)}
    .hero{
      padding:34px 0 22px;
    }
    .hero-shell{
      position:relative;overflow:hidden;border:1px solid rgba(234,223,206,.96);
      background:
        linear-gradient(135deg, rgba(255,255,255,.78), rgba(255,250,244,.92)),
        radial-gradient(circle at 18% 24%, rgba(31,122,140,.12), transparent 18%),
        radial-gradient(circle at 82% 20%, rgba(124,92,255,.12), transparent 18%);
      border-radius:32px;box-shadow:var(--shadow);
      padding:30px 22px;
    }
    .hero-shell::before,.hero-shell::after{
      content:"";position:absolute;border-radius:50%;filter:blur(2px);pointer-events:none
    }
    .hero-shell::before{width:170px;height:170px;background:radial-gradient(circle, rgba(232,111,81,.18), transparent 70%);right:-40px;top:-30px}
    .hero-shell::after{width:120px;height:120px;background:radial-gradient(circle, rgba(31,122,140,.16), transparent 70%);left:8%;bottom:-28px}
    .hero-grid{display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center;position:relative;z-index:1}
    .eyebrow{display:inline-flex;align-items:center;gap:8px;padding:8px 12px;border-radius:999px;background:rgba(31,122,140,.10);color:#155a68;font-size:13px;font-weight:700}
    h1{font-size:clamp(30px,5vw,52px);line-height:1.08;margin:16px 0 14px;letter-spacing:-.02em}
    .lead{font-size:16px;line-height:1.8;color:var(--muted);max-width:62ch;margin:0 0 20px}
    .hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-bottom:18px}
    .hero-points{display:flex;flex-wrap:wrap;gap:10px}
    .chip{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#415364;font-size:13px;box-shadow:0 6px 16px rgba(33,44,66,.04)}
    .hero-panel{
      border-radius:26px;background:linear-gradient(180deg, rgba(255,255,255,.85), rgba(245,239,230,.95));
      border:1px solid rgba(234,223,206,.95);padding:18px;box-shadow:0 16px 34px rgba(33,44,66,.06)
    }
    .hero-metrics{
      display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px
    }
    .metric{
      background:linear-gradient(180deg,#fff, #fbf7f2);
      border:1px solid var(--line);border-radius:18px;padding:16px
    }
    .metric strong{display:block;font-size:24px;line-height:1.1;margin-bottom:6px}
    .metric span{display:block;color:var(--muted);font-size:13px;line-height:1.5}
    .section{padding:18px 0}
    .section-head{display:flex;align-items:end;justify-content:space-between;gap:16px;margin-bottom:16px}
    .section-head h2{margin:0;font-size:clamp(24px,3vw,34px);line-height:1.15}
    .section-head p{margin:0;color:var(--muted);max-width:60ch;line-height:1.7}
    .grid-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .grid-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .card{
      background:linear-gradient(180deg, rgba(255,255,255,.96), rgba(252,248,243,.92));
      border:1px solid rgba(234,223,206,.98);border-radius:var(--radius);padding:20px;box-shadow:0 10px 24px rgba(33,44,66,.05);
      transition:transform .22s ease, box-shadow .22s ease, border-color .22s ease
    }
    .card:hover{transform:translateY(-3px);box-shadow:var(--shadow2);border-color:#d7c8b2}
    .card h3,.card h4{margin:0 0 10px;line-height:1.25}
    .card p{margin:0;color:var(--muted);line-height:1.75}
    .icon-badge{
      width:46px;height:46px;border-radius:16px;display:inline-flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg, rgba(31,122,140,.12), rgba(124,92,255,.12));color:#155a68;font-weight:800;margin-bottom:12px
    }
    .stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:14px}
    .stat{
      background:#fff;border:1px solid var(--line);border-radius:20px;padding:18px;box-shadow:0 8px 20px rgba(33,44,66,.04)
    }
    .stat strong{display:block;font-size:28px;line-height:1;margin-bottom:6px}
    .stat span{color:var(--muted);font-size:13px;line-height:1.5}
    .service-list{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .service-list .card ul{margin:12px 0 0;padding:0;list-style:none;display:grid;gap:8px}
    .service-list .card li{padding-left:18px;position:relative;color:#425463;line-height:1.6}
    .service-list .card li::before{content:"";position:absolute;left:0;top:.65em;width:8px;height:8px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand2))}
    .pipeline{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
    .step{
      position:relative;padding:20px;border-radius:24px;background:linear-gradient(180deg,#fff, #fbf7f2);border:1px solid var(--line)
    }
    .step .num{display:inline-flex;align-items:center;justify-content:center;width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;font-weight:800;margin-bottom:12px}
    .table-wrap{overflow-x:auto;border-radius:22px;border:1px solid var(--line);background:#fff;box-shadow:0 10px 24px rgba(33,44,66,.04)}
    table{width:100%;border-collapse:collapse;min-width:760px}
    th,td{padding:16px 14px;border-bottom:1px solid #efe4d3;text-align:left;vertical-align:top}
    th{background:#fbf7f2;color:#314151;font-size:14px}
    td{color:#455463}
    .rating{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
    .stars{color:#f0a500;font-size:18px;letter-spacing:2px}
    .quote-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .quote{
      padding:18px;border-radius:22px;background:#fff;border:1px solid var(--line)
    }
    .quote .who{display:flex;justify-content:space-between;gap:10px;align-items:center;margin-bottom:10px}
    .quote .who strong{font-size:15px}
    .quote .who span{color:var(--muted);font-size:13px}
    .quote p{margin:0;color:#455463;line-height:1.75}
    .case-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
    .case{
      display:grid;grid-template-columns:160px 1fr;gap:16px;align-items:stretch
    }
    .case img{width:100%;height:100%;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#f3eee7}
    .tag-cloud{display:flex;flex-wrap:wrap;gap:10px}
    .tag{padding:10px 14px;border-radius:999px;background:#fff;border:1px solid var(--line);color:#3f5262;font-size:13px}
    .faq{display:grid;gap:12px}
    .faq-item{
      background:#fff;border:1px solid var(--line);border-radius:18px;overflow:hidden
    }
    .faq-q{
      width:100%;padding:16px 18px;border:0;background:transparent;color:var(--text);font-size:15px;font-weight:700;
      display:flex;justify-content:space-between;align-items:center;cursor:pointer;text-align:left
    }
    .faq-q span:last-child{color:var(--brand);font-size:20px}
    .faq-a{max-height:0;overflow:hidden;transition:max-height .28s ease;padding:0 18px}
    .faq-a p{margin:0;color:var(--muted);line-height:1.75;padding-bottom:16px}
    .faq-item.active .faq-a{max-height:220px}
    .faq-item.active .faq-q span:last-child{transform:rotate(45deg)}
    .faq-q span:last-child{transition:transform .25s ease}
    .article-list{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}
    .article{
      padding:18px;border-radius:20px;background:#fff;border:1px solid var(--line)
    }
    .article .meta{font-size:13px;color:var(--muted);margin-bottom:10px}
    .article a{display:inline-flex;margin-top:12px;color:var(--brand);font-weight:700}
    .form-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:16px;align-items:start}
    form{
      background:linear-gradient(180deg,#fff, #fbf7f2);border:1px solid var(--line);border-radius:26px;padding:20px
    }
    .form-row{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
    label{display:block;font-size:14px;font-weight:700;margin:0 0 8px;color:#314151}
    input,select,textarea{
      width:100%;border:1px solid #d9cdbb;background:#fff;border-radius:14px;padding:12px 14px;color:var(--text);
      font:inherit;outline:none;transition:border-color .2s ease, box-shadow .2s ease
    }
    textarea{min-height:120px;resize:vertical}
    input:focus,select:focus,textarea:focus{border-color:rgba(31,122,140,.7);box-shadow:0 0 0 4px rgba(31,122,140,.09)}
    .form-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:14px}
    .contact-panel{
      display:grid;gap:16px
    }
    .contact-box{
      background:#fff;border:1px solid var(--line);border-radius:22px;padding:18px
    }
    .contact-box .row{display:flex;justify-content:space-between;gap:12px;padding:10px 0;border-bottom:1px dashed #ecdcc7}
    .contact-box .row:last-child{border-bottom:0}
    .contact-box strong{color:#314151}
    .contact-box span,.contact-box a{color:var(--muted)}
    .qr{
      display:flex;gap:16px;align-items:center
    }
    .qr img{width:136px;height:136px;object-fit:cover;border-radius:18px;border:1px solid var(--line);background:#f4efe8}
    .links{display:flex;flex-wrap:wrap;gap:10px}
    .links a,.home-link{
      display:inline-flex;align-items:center;justify-content:center;
      padding:10px 14px;border-radius:999px;border:1px solid var(--line);background:#fff;color:#324455
    }
    .site-footer{
      margin-top:10px;border-top:1px solid rgba(234,223,206,.95);
      background:#f4eee7;color:#294052
    }
    .footer-grid{
      display:grid;grid-template-columns:1.15fr .85fr;gap:16px;padding:26px 0
    }
    .footer-grid p,.footer-grid a{color:#324455}
    .footer-bottom{padding:12px 0 20px;color:#5d6874;font-size:13px;border-top:1px solid rgba(234,223,206,.8)}
    .floating{
      position:fixed;right:16px;bottom:16px;z-index:80;display:grid;gap:10px
    }
    .float-btn{
      width:52px;height:52px;border-radius:18px;display:flex;align-items:center;justify-content:center;
      background:linear-gradient(135deg,var(--brand),var(--brand3));color:#fff;box-shadow:0 14px 28px rgba(31,122,140,.24)
    }
    .float-btn.secondary{background:#fff;color:var(--text);border:1px solid var(--line)}
    .floating .tip{
      position:absolute;right:62px;top:0;background:#fff;border:1px solid var(--line);border-radius:16px;padding:10px 12px;
      box-shadow:var(--shadow);white-space:nowrap;color:#314151;font-size:13px;transform:translateY(0);opacity:0;pointer-events:none;transition:.25s ease
    }
    .floating:hover .tip{opacity:1}
    .fade-up{opacity:0;transform:translateY(18px);transition:opacity .6s ease, transform .6s ease}
    .fade-up.in{opacity:1;transform:none}
    .mobile-only{display:none}
    .divider{height:1px;background:linear-gradient(90deg,transparent,rgba(234,223,206,.95),transparent);margin:8px 0 0}
    .small-note{font-size:13px;color:var(--muted);line-height:1.7}
    @media (max-width: 1024px){
      .hero-grid,.form-grid,.footer-grid,.case-grid{grid-template-columns:1fr}
      .stats,.service-list,.pipeline,.quote-grid,.article-list,.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}
    }
    @media (max-width: 760px){
      .nav-toggle{display:inline-flex}
      .nav-links{
        display:none;position:absolute;left:20px;right:20px;top:76px;background:#fff;border:1px solid var(--line);
        border-radius:20px;padding:14px;box-shadow:var(--shadow);flex-direction:column;align-items:flex-start
      }
      .nav-links.open{display:flex}
      .nav-cta{display:none}
      .hero-shell{padding:20px 16px;border-radius:26px}
      .hero{padding-top:18px}
      .hero-actions,.hero-points,.links,.tag-cloud{gap:8px}
      .stats,.service-list,.pipeline,.quote-grid,.article-list,.grid-3,.grid-2,.stats,.case-grid{grid-template-columns:1fr}
      .form-row{grid-template-columns:1fr}
      .case{grid-template-columns:1fr}
      .section-head{flex-direction:column;align-items:flex-start}
      .mobile-only{display:block}
      .desktop-only{display:none}
      .floating{right:12px;bottom:12px}
    }